Attemps to use the sampling_rate in _vab_pulse

measure.py

@@ -53,12 +53,12 @@ class OhmPiHardware:
     def _vab_pulse(self, vab, length, sampling_rate=None, polarity=None):
         """ Gets VMN and IAB from a single voltage pulse
         """
-        def inject(duration):
+        def inject(self, duration):
             self.tx_sync.set()
             self.tx.voltage_pulse(length=duration)
             self.tx_sync.clear()
 
-        def read_values(sampling_rate): # noqa
+        def read_values(self, sampling_rate): # noqa
             _readings = []
             self.tx_sync.wait()
             start_time = datetime.datetime.utcnow()
@@ -73,8 +73,8 @@ class OhmPiHardware:
         if polarity is not None and polarity != self.tx.polarity:
             self.tx.polarity = polarity
         self.tx.voltage = vab
-        injection = Thread(target=inject, kwargs={'duration':length})
-        readings = Thread(target=read_values, kwargs={'sampling_rate': sampling_rate})
+        injection = Thread(target=inject, args=self, kwargs={'duration':length})
+        readings = Thread(target=read_values, args=self, kwargs={'sampling_rate': sampling_rate})
         # set gains automatically
         self.tx.adc_gain_auto()
         self.rx.adc_gain_auto()

test_ohmpi_card_3_15.py

@@ -34,5 +34,5 @@ from utils import change_config
 
 change_config('config_ohmpi_card_3_15.py', verbose=False)
 k = OhmPiHardware()
-k._vab_pulse(vab=12, length=2., polarity=1)
+k._vab_pulse(vab=12, length=2., sampling_rate=20., polarity=1)
 change_config('config_default.py', verbose=False)
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